REPORT UPON A COLLECTION OF FERNS FROM 

 WESTERN SOUTH AMERICA 



By WILLIAM R. MAXON 



The specimens of ferns and fern allies discussed in the following 

 pages are part of an interesting collection made in Peru, Bolivia, 

 and Chile in the latter half of 1914 by Dr. and Mrs. J. JM. Rose. 

 They were gathered incidentally during the progress of a field inves- 

 tigation of the cactus flora of western South America by Doctor 

 Rose, as Research Associate in Botany, Carnegie Institution of 

 Washington, under the joint auspices of the Carnegie Institution 

 and the New York Botanical Garden, this exploration being part of 

 a larger project looking to the preparation of a monograph of the 

 Cactaceae by Doctor Rose and Dr. N. L. Britton. It being impracti- 

 cable to make large general collections, attention was given to a few 

 groups, other than the Cactaceae, such as the ferns, grasses, and 

 certain genera of Compositae. Of the ferns and fern allies, 25 

 species were collected, five of which are apparently new. These are 

 described herein, together with a Peruvian species of Notholaena 

 first gathered by the Wilkes Expedition and never properly distin- 

 guished under a valid name. The rather high proportion of new 

 species is suggestive of the great amount of botanical exploration 

 yet to be done in these interesting regions. 



A duplicate set of the ferns, as well as of other herbarium material 

 of this collection, is deposited in the herbarium of the New York 

 Botanical Garden. The numbers are in continuation of Doctor 

 Rose's earlier series, given mainly to Mexican plants. 



POLYPODIACEAE 



CAMPYLONEURUM AUGUSTIFOLIUM (Swartz) Fee 



Peru: Cuzco, alt. 3,300 meters (19062). Vicinity of Oroya, alt. 

 3,700 meters ( 18691 ) . 



POLYPODIUM MOLLENDENSE Maxon, sp. nov. 



Rhizome creeping, curved or subintricate, 2 to 3 cm. long, 2 mm. 

 in diameter, coarsely radicose, densely paleaceous, the scales widely 

 imbricate, appressed, 2.5 to 3.5 mm. long, very narrowly attenuate- 



Smithsonian Miscellaneous Collections, Vol.65, No. 8 



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